Head of first-team development Nicky Butt has seen his fair share of talented young players walk through the Old Trafford door.
United’s youth system has produced countless stars over the years, but it is easy to forget the many who do not reach their potential and fall by the wayside.
Ravel Morrison is the prime example of a player who had endless talent but not the commitment or mentality to make it all the way to the top.
But for former midfielder Butt, there was one player in particular that he believed was destined for greatness.
“For me, the biggest disappointment at the club was Adnan Januzaj,” he told ESPN.
“I don’t think I’ve seen a player, probably since Ryan (Giggs) who was as good as that, he was unbelievable. In my eyes he should have gone to be a world superstar.
“He’s still playing professional football and he will have a good career. I’m sure he’s a millionaire and he won’t be going to bed worrying about what bills he’s got to pay, but he should have been a superstar.”
Januzaj joined the Reds as a 16-year-old in 2011 and made his debut under David Moyes in 2013. Many fans will remember his stunning match-winning performance away to Sunderland where he scored a splendid volley.
But things fell flat for the Belgian at Old Trafford and he was sent on loan to Borussia Dortmund an Sunderland after failing to establish himself as a first-team regular.
Januzaj, now 24, is currently playing in La Liga for Real Sociedad.